org.apache.hadoop.hdfs.server.blockmanagement.NumberReplicas Maven / Gradle / Ivy
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hdfs.server.blockmanagement;
/**
* A immutable object that stores the number of live replicas and
* the number of decommissined Replicas.
*/
public class NumberReplicas {
private int liveReplicas;
private int decommissionedReplicas;
private int corruptReplicas;
private int excessReplicas;
private int replicasOnStaleNodes;
NumberReplicas() {
initialize(0, 0, 0, 0, 0);
}
NumberReplicas(int live, int decommissioned, int corrupt, int excess, int stale) {
initialize(live, decommissioned, corrupt, excess, stale);
}
void initialize(int live, int decommissioned, int corrupt, int excess, int stale) {
liveReplicas = live;
decommissionedReplicas = decommissioned;
corruptReplicas = corrupt;
excessReplicas = excess;
replicasOnStaleNodes = stale;
}
public int liveReplicas() {
return liveReplicas;
}
public int decommissionedReplicas() {
return decommissionedReplicas;
}
public int corruptReplicas() {
return corruptReplicas;
}
public int excessReplicas() {
return excessReplicas;
}
/**
* @return the number of replicas which are on stale nodes.
* This is not mutually exclusive with the other counts -- ie a
* replica may count as both "live" and "stale".
*/
public int replicasOnStaleNodes() {
return replicasOnStaleNodes;
}
}